人教版高中英语必修二单元三-语法：现在完成时的被动语态(共17张)课件

1、Unit 3 ComputersPeriod 4 The Present Perfect Passive Voice （现在完成时的被动语态）Unit 3 ComputersPeriod 4 TOver time I have been changed quite a lot.2. , I have been used in offices and homes since the 1970s.3. I never forget anything I have been told!4. Since the 1970s, many new applications have been found

2、for me.5. I have also been put into robots and used to make mobile phones as Task1. PresentationOver time I have been changed II. Translation 1. Two windows have been broken 2. The car has not been repaired 两个窗子被打破了。 这辆汽车还没有被修好。 II. Translation 3 Have the cars been repaired？ No，they havent4 How long

3、 has her work been finished？ 这些汽车修好了吗？ 不，还没有。 她的工作完成有多久了？ 3 Have the cars been repa1. 构成： The Present Perfect Passive Voice （现在完成时的被动语态）现在完成时表示过去发生的动作对现在造成影响。have/has been doneThe Present Perfect Passive Vo2. 现在完成时被动语态的各种句式：肯定式 have/hasbeendone The desks have been cleaned. 这些桌子擦干净了。否定式 have/hasnotbe

4、endone The desks have not been cleaned. 这些桌子还没有擦干净。2. 现在完成时被动语态的各种句式：疑问式Have/Has主语beendone?Have the desks been cleaned?No，they havent. 桌子擦干净了吗？ 不，还没有。特殊疑问式 疑问词have/has主语beendone? How long have the desks been cleaned？ 桌子擦干净有多久了？疑问式Have/Has主语beendone?3.现在完成时被动语态的主要用法1) 当动词为短暂动词时，可与already或yet连用。例如：The

5、 work has already been finished.工作已完成了。Im sorry，but the letters havent been typed yet.很抱歉，这些信件还没有被打印出来。3.现在完成时被动语态的主要用法2) 当动词为持续动词时，常与for或since引导的时间状语连用，或用于How long.？句型中。例如：The plan has been discussed for nearly 2 hours.这项计划已被讨论了近两个小时了。2) 当动词为持续动词时，常与for或since引导的时间状注意事项:1) 现在完成时的被动语态的两个助动词，即have/has

6、和been，缺一不可。2) 只有及物动词才有被动语态，不及物动词（词组）没有被动语态。注意事项:3) 副词的位置 often, usually, always, never, hardly, seldom等副词置于have/has和been中间。如: 误 Such a man has been hardly believed. 正 Such a man has hardly been believed.3) 副词的位置1Over the past ten years，this town _ (hit) twice by earthquakes.答案：has been hit2Will the

7、lecture be held at 4 oclock this afternoon?No. It_(put off) till tomorrow afternoon.答案：has been put offConsolidation.1Over the past ten years，thisII. Choose the best answers.1. All the preparations _, and were ready to start. A. completed B. complete C. had been completed D. have been doneII. Choose

8、 the best answers.2. - How long _ at this job? - Since 1990. A. were you employed B. have you been employed C. had you been employed D. will you be employed2. - How long _ at this 3. Betty_ injured since last Saturday. A . has been B. was C. is D. has4. -Did you move into the new house? - No. The ro

9、oms _ yet. A. were being painted B. are painting C. have not painted D. have not been painted 3. Betty_ injured since lastIII. 用所给词的适当形式填空。1.These rooms_yet. (not ,clean)2.Have these cars_? (repair)3.How many new words _ this term? (learn)have not been cleanedbeen repairedhave been learnedIII. 用所给词的适当形式填空。1.These rooms1. Recite the sentences from the text.2.